One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,7,4,6)(9,10,13,12)(11,14,16,15)(17,18)(19,26)(20,27)(21,25)(22,31)(23,28)(24,29)(30,32)(1,3,5,4)(2,6,8,7)(9,11)(10,14)(12,15)(13,16)(17,19)(18,23)(20,30)(21,28)(22,32)(24,31)(25,26)(27,29)(1,3,5,4)(2,7,8,6)(9,12,13,10)(11,15,16,14)(17,20,27,18,21,31,22,25)(19,26,32,24,28,23,29,30)(1,3,5,4)(2,7,8,6)(11,16)(14,15)(17,19,27,32,21,28,22,29)(18,24,31,23,25,30,20,26)(1,4,5,3)(2,7,8,6)(18,25)(20,31)(23,26)(24,30)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.